菌根接种对柑桔磷素营养和生长效应的研究

许多研究证明菌根能显著地促进柑桔生长.Menge等(1975)报道接种Glomus fasciculatus于不同柑桔品种实生苗后,其植株生长量比无菌根的增加120—2600%.目前,美国、澳大利亚和南非等国以菌根真菌作为一种“生物肥料”,正研究菌根接种剂的商业生产,企图应用于柑桔果园,来提高肥效和减少施肥量.

THE EFFECTS OF INOCULATION OF MYCORRHIZAL FUNGI ON PHOSPHORUS NUTRITION AND GROWTH OF CITRUS SEEDLINGS

Two mycorrhizal fund CC-1,CC-2 were used to inoculate the roots of three citrus species.Anatomic investigation showed that they might be associated with the host plant to form endomycorrhiza,but there were significant differences in the debree of infection among different citrus species.At the time of four and a half months after inoculation,the rate of infection of glorious orange inoculated with CC-1 and it was found that there were mycelia on the root surface and plenty of vesicles and arbuscules in tortes.The infection rate of rough lemon inoculated with CC-2 was 7000,and there was no mycelium on the root surface,and the infection rate of Poncinus trifoliata was the minimal.